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Double-side aluminum-coating steel composite material and preparation method thereof

A composite material and aluminum-coated technology, which is applied in the field of double-clad aluminum-steel composite materials and its preparation, can solve problems such as difficulty in performance improvement, complex process, and decreased bonding strength of aluminum and steel, and achieve mature equipment and technology and simple process , good machinability effect

Inactive Publication Date: 2018-05-18
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hot-dip aluminum coating process has the following disadvantages: the thickness of the aluminum coating layer is tens to hundreds of microns, it is difficult to prepare a thicker aluminum coating layer, and the thickness of the aluminum coating layer is not easy to control and change; most of the aluminum coating steel is low carbon Steel, it is not easy to adjust its mechanical properties through heat treatment, and it is difficult to improve the properties; acid-base cleaning, covering agent, and fluxing agent have a corrosive effect on the equipment used in the hot-dip aluminum plating process; the environment is seriously polluted; the process is complicated; moderate deformation processing will Cracks or spalling of hot-dip aluminum plating
However, the annealing temperature is 650-850°C. If the annealing temperature is too high, Al-Fe intermetallic compounds will be generated at the aluminum-steel interface, which may cause delamination at the aluminum-steel junction of the composite material during subsequent application, making the aluminum Decreased steel bonding strength seriously affects the use

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  • Double-side aluminum-coating steel composite material and preparation method thereof

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preparation example Construction

[0034] The present invention also provides a method for preparing the aforementioned double-clad aluminum-steel composite material, wherein the preparation method includes:

[0035] (1) Surface treatment: cleaning the coating layer and the base layer to remove residual pollutants on the surface of the coating layer and the base layer, and then grinding to form a hardened layer.

[0036] (2) Rolling and compounding: after the cladding and the base layer treated in step (1) are stacked and fixed, a rolling and compounding is carried out to prepare a rolling and compounding product, and the rolling speed is 10-30m / min. The rolling method is cold rolling or warm rolling, and the processing rate is 40%-70%.

[0037] (3) Heat treatment: place the rolled composite product prepared in step (2) at a temperature of 200-400° C., and keep it warm for 1-3.5 hours.

[0038] The diffusion annealing treatment (i.e. heat treatment) after rolling and compounding takes into account two purposes...

Embodiment 1

[0046] This embodiment provides a double-clad aluminum-steel composite material.

[0047] The preparation method is as follows:

[0048](1) Surface treatment: Surface treatment is carried out on the DC05 stainless steel plate with a thickness of 2.5mm and the 1050 aluminum alloy plate with a thickness of 0.115mm. The stainless steel plate is cleaned with 10% HCl solution, and the aluminum alloy plate is cleaned with 10% NaOH solution. Remove residual contamination from the surface, then sand it with an abrasive belt to form a hardened layer;

[0049] (2) Rolling composite: after the DC05 stainless steel plate and 1050 aluminum alloy plate processed in step (1) are stacked and fixed, they are rolled and composited in one pass on a cold rolling mill to prepare a firmly bonded double-clad aluminum For steel composite materials, the rolling speed is 15m / min, the processing rate is 40%, and the rolling method is cold rolling;

[0050] (3) Heat treatment: Place the double-clad alu...

Embodiment 2

[0055] This embodiment provides a double-clad aluminum-steel composite material.

[0056] The preparation method is as follows:

[0057] (1) Surface treatment: Surface treatment is carried out on the DC05 stainless steel plate with a thickness of 1.2mm and the 1050 aluminum alloy plate with a thickness of 0.067mm. The stainless steel plate is cleaned with 10% HCl solution, and the aluminum alloy plate is cleaned with 10% NaOH solution. Remove residual contamination from the surface, then sand it with an abrasive belt to form a hardened layer;

[0058] (2) Rolling composite: after the DC05 stainless steel plate and 1050 aluminum alloy plate processed in step (1) are stacked and fixed, they are rolled and composited in one pass on a cold rolling mill to prepare a firmly bonded double-clad aluminum For steel composite materials, the rolling speed is 25m / min, the processing rate is 70%, and the rolling method is cold rolling;

[0059] (3) Heat treatment: Place the double-clad al...

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Abstract

The invention relates to a double-side aluminum-coating steel composite material and a preparation method thereof. The double-side aluminum-coating steel composite material is formed by rolling a baselayer and two coating layers separately positioned at two sides of the base layer and then carrying out heat treatment at 200-400 DEG C, wherein the base layer is a stainless steel layer, and each coating layer is an aluminum alloy layer. The bonding strength of the base layer and the coating layers of the double-side aluminum-coating steel-aluminum composite material is high and reaches 32 N / mm,and delamination does not occur easily.

Description

technical field [0001] The present invention generally relates to metal composite materials, in particular to a double-clad aluminum-steel composite material and a preparation method thereof. Background technique [0002] As the most important basic material in industrial construction, steel's corrosion and wear have always been the main problems that plague people. At present, the surface treatment technology of composite aluminum layer is widely used at home and abroad to solve this problem. This technology not only combines the corrosion resistance of aluminum with the strength of steel, but also makes the steel have a new performance, heat resistance, and has good reflectivity to light and heat, so that the steel has high corrosion resistance and high temperature oxidation resistance. , wear resistance, high hardness and other advantages. [0003] In the prior art, hot-dip aluminum plating is currently the most widely used surface treatment method for steel materials i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/18B32B15/20B32B37/10B32B37/06B32B38/16B32B38/00
CPCB32B15/012B32B15/18B32B15/20B32B37/06B32B37/10B32B38/0036B32B38/162B32B2038/0048
Inventor 李龙张春丽沈宇龙周德敬
Owner YINBANG CLAD MATERIAL
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